Fever of Unknown Origin: Could It Be a Pheochromocytoma? A Case Report and Review of the Literature

Figure 3

Pathology from left adrenal. H&E (400x). High power depicts ample and finely granular eosinophilic cytoplasm. The nuclei exhibit typical “salt and pepper” chromatin, characteristic of all neuroendocrine tumors. Nuclei are round to oval and uniform without significant pleomorphism or mitotic activity. Nucleoli are inconspicuous.